LP Classic Serial help
Can't figure this out

Gibson-people! I have a LP Classic with serial 133288. I bought it ten years ago. It has served me well but now I'm thinking about selling it and realized that I don't know when its made. Can anyone help me out with the serial - I can't get my head around these Classic serials.

Gibson-people! I have a LP Classic with serial 133288. I bought it ten years ago. It has served me well but now I'm thinking about selling it and realized that I don't know when its made. Can anyone help me out with the serial - I can't get my head around these Classic serials.

Thank you from all the way from Sweden!

/David

either a 1991 or a 2001. the 1 representing the year and the rest of the number is the production number.